Apparatus for erecting box shells



Jan. 3, 1933. a. BELLMANN APPARATUS FOR EREC'I'ING 80X SHELLS Filed July7, 1931 3 Sheets-Sheet 1 IHI HlllH! III Ill ' WI 6771b": QBeJ/m wn I1933. a. BELLMANN 3,

APPARATUS FOR ERECTING BOX SHELLS Filed July 7. 1931 3 Sheets-Sheet 2Jan. 3, 1933. s. BELLMANN 1,893,389

APPARATUS FOR EREGTING BOX SHELLS I Filed July 7, 1951 3 Sheets-Sheet 3R vii 26 23 252421 Patented Jan. 3, 1933 UNITED STATES PATENT OFFICEGEORG BELLMANN, or nansnnn, GERMANY, ASSIGNOR T UNIVERSELLEoreamace'rravMascranium-m15am, J. o. MULLER .9; COMPANY, or DRESDEN,GERMANY APPARATUS FOR I IRECTING BOX SHELLS Application filed July 7,1931, Serial No 549,299, and in Germany December 11, 1930.

It is well known that drawer and shell boxes consist of a shell part anda drawer part. The shell part is generally made by a machine in suchmanner that a tubular structure provided with the correspondin fourlongitudinal scored lines is produce from this structure separate stripsof the length of the drawer part are separated. In order that these flatstrip structures of the drawer part can be inserted, the shell part mustbe erected or opened. Numerous proposals have been made to enable thisto be done mechanically. At this point it 1s worthy ofnotice that adevice for erectlng box shells is known in which the flat shell isthrust against a notch and thereby opened.

In the new device the shell is also thrust against a notch formed in alever and thereby opened but the lever is mounted for mo ve-' menttransversely to the forward direct on of the opening in such manner thatlever and notch can follow the edge of the shell, which rises from thetable surface under the feeding pressure and engages in the notch, untilthe complete erection of the shell has taken place.

The notch forms the end of an abutment surface which limits the raisingof the shell to the fully opened position.

The drawer part must now be inserted in the erected shell. For this itis necessary for the shell to be conveyed to the position where theinsertion of the drawer part takes place. According to thisinvention'the shell is conveyed by a plunger arranged displaceablytransversely to the forward direction of the opening of the shell insuch manner that after completion of the opening of the shell it canenter into the opened shell, carry it along and convey it to theposition where it is united with the drawer part. The plunger isarranged in a casing so as to be displaceable to a limited extent,whereby the member for advancing the casing seizes the plunger. firstdisplacing it so that it enters the opened box shell, and then theplunger carries along the casing, the edge of which rests against thecorresponding end of the shell fixed round the plunger, so that onreaching the position 50 where the drawer part is to be introduced theand plunger can be withdrawn by itself, while 5 the opened shell duringthe introduction voftiielldrawer part finds an abutment on the V s eFig.1 of the annexed drawings is a plan of an embodiment of theinvention.

Figs. 2-5 show the means for raising the box shell, in verticallongitudinal section along the line 22 of Fig. 1 in four successiveworking positions.

Figs. 68 show a side view of the means for the further conveyance of theraised shell, partly cut away along the line 77 of Fig. 1.

' Figs. 9 and 10 are sections on the line aa of Fig. 1 in two differentworking positions.

The member 1 which removes the horizon-' tally disposed shells from amagazine 2, consists of a plate attached to the angular crank rod 3, andis reciprocated by means of the crank 4. The front edge of'the partofthe shell engaged by the plate 1 strikes against the notch 5 (Fig. 3) ofthe rocking lever 7 pivoted at 6 (Fig. 3). The .plate 1 now advances anderects the shell (Fig. 4). In this operation the rocking lever 7 islifted against 76 the action of its spring 8'until the shell iscompletely erected (Fig. 5). At the same time the plate 1 rises over thesurface ofthe table 9. so that the erected shell is held be-' tween foursurfaces 1, 7, 7". 9 forming a rectangle. The raising of the plate 1 isbrought about by the lever 11 pivoted at 10, on which lever the roller3' of the crankrod 3 rests, this lever being raised by means of a cam12. The latter is driven by the crank shaft 4 through the gear wheels13, 14, 15, (see Figs. 2, 5, 9 and 10).

As soon as the shell has been completely erected, the conical plungers16 is thrust therein. The latter is mounted on a rod 17 and is actuatedby a cam 18 through a link mechanism. The rod 17 and the plunger 16are-mounted in the casing 22 so as to be displaceable to a limitedextent. These in their ggrn are guided in a straight line in a bracketFirst of all the plunger 16 moves forward aloneuntil the stop 24 of therod 17 comes into contact with the other end of the slot 25 provided inthe casing 22 (Fig. 7 From 100 now onwards the plunger and the casingmove together (Fig. 8). The two tongues 26 forming the front end of thecasing rest against the edges ofthe raised shell and thrust it, as shownin Fig. 8, to the left. In order to render possible the forward movementof the tongues a recess 27 is provided in the table 9 and in the rockinglever 7 a recess 28.

After the casing 26 has reached its limit of movement, a ball 29provided in an opening in the bracket 23 and under the influence of aspring, enters a recess 30 in the casing, so that the casing is securedflexibly. At this moment, by means not shown, the drawer part isintroduced in known manner into the shell. and at the same time theplunger is withdrawn from the shell. The casing 22 is, however. securedflexibly, until the pin 24 comes into contact with the rear end of theslot 25. Thus the tongues 26 can during this time serve as ahutments forthe shell which is easily pressed to the right by the introduction ofthe drawer part (Fig. 8).

Having thus described the nature of the said invention and the bestmeans I know of carrying the same into practical effect, I

until the complete erection of the shell is accomplished.

2. Apparatus according to claim 1 in which the lever containing thenotch forms an abutment surface which limits the erection of the shellto the exact opened position.

3. Apparatus according to claim 1 in which the lever is rockably mountedand has a rectangular abutment surface, and a spring for drawing thelever down to the table surface.

4. Apparatus according to claim 1, in

which the pressure applyingmeans comprise a controlled plate whichpasses through the table surface, a magazine containing shells,

said plate engaging with the lowest shell in a magazine and removing ittherefrom, advancing it to the notch, and then by rising over thesurface of the table and finally by coming into a vertical positionplaces the opened shell in the correct position.

5. Apparatus according to claim 1, characterized in that a plunger isarranged displaceably transversely to the forward direction of the shellopening movement, so that on the completion of the opening of the shellit can enter the opened shell, carry it along, and conduct it to theposition where the shell is united with a drawer part.

6. Apparatus according to claim 1 comprising a casing, a plungerdisposed in said casing for limited dlsplacement transversely to theforward direction of the shell opening movement, so that on thecompletion of the opening of the shell it can enter the open shell,carry is along and'conduct it to the position where the shell is unitedwith a drawer part, a member for advancing the casing, and adapted toseize the plunger displacing it so that it enters the opened box shell,and then carrying the casing along, one edge of the latter restingagainst the corresponding ends of the shell fixed on the plunger, sothat on reaching the position where the drawer part is introduced, theplunger can be withdrawn by itself, while the opened shell finds anabutment on the casing during the introduction of the drawer part.

7. Apparatus according to claim 1 com prising a casing, a plungerdisposed in said casing for limited displacement transversely to theforward direction of the shell opening movement so that on thecompletion of the opening of the shell it can enter the open shell,carry it along and conduct it to the position where the shell is unitedwith a drawer part said casing ending in the vicinity of the plunger inrigid tongues for the passage of which recesses are provided in thetable surface and recesses are provided in the lever having the notch.

In testimony whereof I have signed my name to this specification.

GEORG BELLMANN.

